摘要
针对某预应力混凝土曲线匝道桥在通车运营前出现支座脱空的现象,建立空间有限元模型对其进行受力计算,通过分析计算结果对通车运营后的支座工作状态作出预测;通过对两种病害处理方案的有限元模型进行受力对比分析,验证了采用预应力钢拉杆进行支座脱空治理的可靠性。
On the basis of the phenomenon of bearing hang in the prestressed concrete curved ramp bridge before opening the traffic, the finite element model is established to calculates the stress, and then the working state of bearing after opening the traffic is forecasted by analyzing the calculating results. According to the stress comparison of the two finite element models of two treatment scheme, the reliability of using the prestressed steel rod to deal with the bearing hang problem is verified.
出处
《公路》
北大核心
2010年第4期59-63,共5页
Highway
基金
国家自然科学基金项目
项目编号50708056
山东省自然科学基金项目
项目编号Q2006F02
关键词
曲线箱梁桥
有限元
病害分析
加固
curved box girder bridge
finite element
disease analysis
reinforcement
